Brake-shoe.



J. J. KINZBR.

BRAKE SHOE. A PP-LIOATION FILED FEB. 27,1911.

Patented June 27, 1911.

ficaq [I1 0012 for:

J J. KINZER.

BRAKE SHOE.

' APPLICATION FILED FEB.27,1911.

99 ,415, PatentedJune27,l9l1.

Jomr J. KINYZER, or rrrrssurcc, PENNSYLVANIA, nssre'non T rirrssunen BRAKE SHOE COMPANY, OF PITTSBURG,

' .VANIA To all whom it may concern:

Be it known that I, JOHN J; KINZER, a resident of Pittsburg,vin the county of Allegheny and State of Pennsylvania, have in- 7 shoes they have proven satisfactory on I trains or cars running at slow speed or low brake pressure, but in the modern high speed trains and especially with steel cars and high brake pressure, the degree of heat produced between the metaliof the brake-shoe casing and the face'of the wheel with which it is employed is so great-or intensethat it burns or melts such metal casings to such an extent that they will lose theirvitality, so. that it lessens its support of the filling material, and will permit the shoe to wear out much quicker.

The object of In invention is to provide a cheap, simple. an efficient'form of a brakeshoe in which the inclosing casing for the filling material Will be unaffected by the heat between the shoe and wheel/so that it will be practically heat resisting and fireproof.

To these ends my invention consists, generally stated, in'the novel arrangement, c0n

structionand combination of parts, as here inafter more specifically set'forth and 'described and particularly pointed out in the claims.

To enable others skilled in the artvto ,whichmy invention appertainsto construtt and use my improved brake-shoe, I will describe the same more fully, referring to the accompanying drawing, in which- Figure 1 is a 'fongltudinal section, of a brake-shoe constructed inaccordanoe with my invention. Fig. 2 is a like view showing a reinforcement formed as part of the sulpporting lug. Fig. 3 is a cross-section on the me 33, Fig. 1. Fig. 4 is a planar back view of the shoe with the reinforcement shown in Fig. 2. Fig. 5 is a cross-section on the line 55, Fig. 2. 'Figs. 6, 7 and 8 are longitudinal sections of other forms of the Qlfinvention. Fig. 9 is a side elevation, partly Specification of Letters Patent. Application filed February 27, 1911. Serial PENNSYLVANIA, A CORPORATION or PENNSYL- "B AK -SHOE.

' Patented June 27,1911. No. 611,141., l

- I in section, of another form of the invention.

Figs. 10, 11,12 and 13 are cross-sections of the shoes shown in Figs. 6, 7, 8 and '9, re-

ing another form of the invention.

Like symbols of reference herein indicate proved brake-shoe comprises an inclosing casing 1, and a filling a of frictional material inserted .within suchv casing, which casing is formed of a refractory material, such .as asbestos or other suitable material, and which can be treated in any suitable manner and by any suitable materials for assisting or binding, to render it practically heat proof and capasired, .so as to form a structure having an integral back wall 2, side walls 3 and end walls 4, as .well as beingo-pen at its-front. and curved substantially'in accordance with the periphery 'ofthe'c'ar wheel to which it is to be applied.- A supporting lug 5,-through which the brake-shoe is connected to the ordinary approved brake-head or hanger is fixed to the back 2 of the casing 1 and is preferably separate therefrom and connected thereto by having its inner ends 5' passed through slots 2.in said back and turned over thereon. Short bearing surfaces 6 which are adapted to abut against aring's .onrt e ends of the brake-head or casing l, adjoiningi ends, and such bearing faces are preferably recessed, as at; 7

said head or hanger are adapted to ab t tafgainst said back wall and on each side 3f e lug 5. The rubbing 'lor .frict-ional action of the brake-shoe upon the wheel is exerted\by'the frictional member a, which consists of a fill ing of any suitable material, such as ca'stiron, or a composition of matter specially prepared for the purpose, and of such character as to exert proper and sutlicient friction upon the periphery of the wheel without the imposition of undue or excessive character are well knownlto those skilled in the casing 1 when set in a mold or inserted in such casing under pressure and retained As' illustrated in the drawings, my imsuitable means, or mixed with anger, are for ed orgthe baclnwall 2 of the while central or inteltmediate bearings on' spectively. Fig. 14 is a cross-section showlike parts in each of the figures of the draw- 'ble' of being bent or cast into shape, as de- 10,5, pressure thereon, and compositions of this the art. This filling a is either cast into in position, after hardening, by the walls of the casing.

If desired, the bent ends of the lug 5' can be extended along -the inner face of back-wall 2 of the casing 1 and bent up into the ends 6 of the bearing surfaces 6 to form a reinforcement, as shown in Figs. 2 and 4,

7 instead of such reinforcement being formed as part of such lug. All the walls of the said casing can be reinforced by any suitable material, such as the well known 'expanded metal 8 within suchwalls and between two layers of the fibrous or refractory material, as shown iri Figs. 6 and 10, or if desired, the baclfiwall 2 can be reinforced by the'longitudinal metal strip 9, such as steel, embedded in recesses 9' formed in the outer side of said wall, by the material of said wall entering perforations in said strip and forming such recesses as shown in Figs. 7 and 11 or on the inner side of the said wall, as shown in Figs. 8 and 12, while if desired, a metallic reinforcement cap, such as steel, and shown at 10 in Figs. 9 and 13 can extend exteriorly over and around the back, sides and ends of the casing 1 on which the hanger bearing surfaces 6 can be formed with the sides of said cap solid and.

its back provided with openings 10 through the same for projecting portion 2 on the casing back 2 to fill such openings, or such reinforcement lO can be inserted within the 'tial advantages of lightness, inexpensive construction, and capability of use until practically worn entirely away with such filling material, while any tendency of the casing to crack or break is overcome when"- it or the filling material becomes worn, and

the consequent liability to injury or derailment by flying fragments is thereby pre- Copies of this patent may be obtained for and non-burning will retain its shape and condition, as well as remain intact, notwithstanding any heat from thewheel by contacting with the frictional filling of the shoe and from any knocks or blows to the same.

'What I claim as my invention and desire to secure by Letters Patent is- 1. A brake-shoe comprising an inclosing casin of refractory material, and a filling of frictional material.

' 2. A brake-shoe comprising an inclosing casing of reinforced refractory material, and afilling of frictional material.

A brake-shoe comprising an inclosing casing of refractory material having integral back, side and end walls, and a filling of frictional material.

A brake-shoecomprising an inclosing casing of reinforced refractory material having integral back, side and end walls, and a filling of frictional material.

5. Abrake-shoe comprising an inclosing casing of refractory material having a reinforcement within the same, and a filling of frictional material.

6. A brake-shoe comprising an inclosing casinghaving integral back, side and end walls provided with a reinforcement within the same, and a filling of frictional material.

7. A brake-shoe comprising an inclosing casing of refractory material having a reinforcement around the same, and a filling of frictional material.

8. A brake-shoe comprising an inclosing casing having integral back, side and end walls provided with a reinforcement around the same, andfa filling of frictional material.

9. A brake-shoe comprising an inclosing casing of refractory material having a reinforcement around and within the same, and a fillin of frictional material.

10. i brake-shoe comprising an inclosing casing of refractory material having integral back, side and end walls provided with areinforcement around and within the same, and a'filling of frictional material.

In testimony whereof, I, the said JOHN J. KINZER, have hereunto set my hand. JOHN J. KINZER.

Witnesses: T. B. HUMPHRIES.

J. N. Coons.

five cents each, by addressing the Commissioner of Patents, I Washington, D. G. 

